code: def test_property_set_font_file(prop):
      font_file = os.path.join(
          os.path.dirname(__file__), "fonts/Mplus2-Regular.ttf"
      )
      prop.set_font_file(font_file)
      with pytest.raises(FileNotFoundError):
          prop.set_font_file("foo.ttf")
  
imports: import os
  import numpy
  import pytest
  import pyvista
label_desc: Use image node_id 21 for calling a global function with example usage: test_property_set_font_file(prop) without return types